/* 全局设置 */
* {
    box-sizing: border-box;
  }
  
  body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background-color: #f5f5f7;
    color: #1f2933;
  }
  
  /* 头部 */
  header {
    background-color: #1f2933;
    color: #ffffff;
    padding: 12px 20px;
  }
  
  header h1 {
    margin: 0 0 6px;
    font-size: 20px;
  }
  
  header nav a {
    color: #e5e7eb;
    text-decoration: none;
    margin-right: 10px;
    font-size: 14px;
  }
  
  header nav a:hover {
    text-decoration: underline;
  }
  
  header hr {
    border: none;
    border-top: 1px solid #4b5563;
    margin-top: 10px;
  }
  
  /* 主体区域 */
  main {
    max-width: 960px;
    margin: 20px auto;
    padding: 0 16px 40px;
  }
  
  /* 页脚 */
  footer {
    max-width: 960px;
    margin: 0 auto 16px;
    padding: 0 16px;
    font-size: 12px;
    color: #6b7280;
  }
  
  /* flash 消息 */
  .flash-area {
    max-width: 960px;
    margin: 10px auto 0;
    padding: 0 16px;
  }
  
  .flash-message {
    background-color: #e0f2fe;
    border-left: 4px solid #0284c7;
    padding: 10px 12px;
    border-radius: 8px;
    margin-top: 8px;
    font-size: 14px;
  }
  
  /* 标题 */
  h2 {
    margin-top: 0;
    margin-bottom: 14px;
    font-size: 20px;
  }
  
  /* 表单（横向排列） */
  .form-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
    padding: 12px 12px;
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 2px 6px rgba(15, 23, 42, 0.08);
  }
  
  .form-row input[type="text"],
  .form-row input[type="number"],
  .form-row input[type="date"] {
    padding: 8px 10px;
    border-radius: 8px;
    border: 1px solid #d1d5db;
    font-size: 14px;
    min-width: 140px;
  }
  
  .form-row input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
  }
  
  /* 按钮 */
  button {
    padding: 8px 16px;
    border-radius: 8px;
    border: none;
    font-size: 14px;
    cursor: pointer;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: #ffffff;
    white-space: nowrap;
  }
  
  button:hover {
    opacity: 0.9;
  }
  
  button:active {
    transform: translateY(1px);
  }
  
  /* 表格 */
  table {
    width: 100%;
    border-collapse: collapse;
    background-color: #ffffff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 6px rgba(15, 23, 42, 0.08);
    font-size: 14px;
  }
  
  th, td {
    padding: 8px 10px;
    border-bottom: 1px solid #e5e7eb;
    text-align: left;
  }
  
  th {
    background-color: #f3f4f6;
    font-weight: 600;
  }
  
  tr:nth-child(even) td {
    background-color: #f9fafb;
  }
  
  /* レポート中の进度条外层如果想统一风格也可用这个类 */
  .progress-bar {
    background:#e5e7eb;
    border-radius: 8px;
    overflow: hidden;
    height: 18px;
    max-width: 480px;
  }
  
  .progress-inner {
    height: 18px;
    background:#4caf50;
  }
  
  /* 图表 canvas */
  canvas#weekChart {
    margin-top: 10px;
    background-color: #ffffff;
    border-radius: 12px;
    padding: 10px;
    box-shadow: 0 2px 6px rgba(15, 23, 42, 0.08);
  }
  
  /* 链接 */
  a {
    color: #2563eb;
  }
  
  a:hover {
    text-decoration: underline;
  }
  
  /* 手机适配 */
  @media (max-width: 640px) {
    .form-row {
      flex-direction: column;
    }
  
    .form-row input[type="text"],
    .form-row input[type="number"],
    .form-row input[type="date"],
    .form-row button {
      width: 100%;
    }
  
    header h1 {
      font-size: 18px;
    }
  }